Tyrava was one four Mogai-class starships docked at Dimorus Station in the Dimorus system in 2409. When the station came under attack from a Starfleet vessel hunting down the Star Empire's Borg research, the crew attempted to quickly reactivate the ship while the prototype of a Borg-adapted Mogai, the IRW Esemar, engaged the Starfleet ship. All Mogai-class warbirds in the system were subsequently destroyed by the victorious Starfleet ship. (STO - "Romulan Mystery" mission: "By Any Means")